Shave tool



June 18, 1963 J. P. SYNK ETAL 3,094,024

SHAVE TOOL Filed July 18. 1960 2 Sheets-Sheet 1 Fig. 3

INVENTORS.

JOHN 2 sum BY JOHN s.czomw ATTORNEYS June 18, 1963 J. P. SYNK ETAL SHAVE TOOL Filed July 18. 1960 2 Sheets-Sheet 2 INVENTORS.

JOHN P. SYNK JOHN S. CZORNY wwnh- @d' ATTORNEYS Patented June 18, 1963 3,094,024 SHAVE TOOL John P. Synk, Parma Heights, Ohio, and John S. Czorny,

Lynwood, Calili, assignors to Smitco, Inc., a corporation of Ohio Filed July 18, 1960, Ser. No. 43,689 Claims. (CI. 82-35) The invention relates in general to shave tools and more particularly to such tools adapted for use with automatic screw machines.

An object of the invention is to provide a shave tool which includes a body rotatable on and relative to a bushing with a pair of helical springs acting between the body and the bushing to resiliently urge the body in one rotational direction.

Another object of the invention is to provide a stop means which acts between the aforementioned shave tool body and bushing to limit the rotational movement of the body in the referred to one rotational direction.

Another object of the invention is to provide a shave tool which includes a body rotatable on a bushing and having means to prevent relative axial movement between the two which includes an annular groove on the bushing and a member held in the body and extending into the annular groove.

Another object of the invention is to provide a shave tool with a new and novel roll block assembly and vertical guide therefor.

Another object of the invention is to provide a shave tool with an ofiset roll block assembly with the roller located at the very edge of the assembly thereby enabling one to engage the work very close to the collet or other work holding means.

Another object of the invention is to provide a shave tool with a configuration which enables one to obtain more clearance between the tool and the work in the back position of the machine slide.

Another object of the invention is to provide a shave tool for use on either the front or back slide of an automatic screw machine with the machine spindle running either forward or reverse.

Another object of the invention is to provide a shave tool which holds very close tolerances which in turn helps eliminate secondary operations.

Another object of the present invention is to provide a shave tool having a cutter which can be easily and quickly removed for sharpening and then replaced without disturbing the cutter holder which reduces the down time of the machine.

Another object of the invention is to provide a shave tool having a body mounted on a bushing for rotative movement and being spring biased in one rotative direction with a quick and easy means for adjusting the spring biasing force.

Other objects and a fuller understanding of this invention may be had by referring to the following description and claims, taken in conjunction with the accompanying drawings, in which:

FIGURE 1 is a side elevational view of the shave tool of the present invention as mounted by an adapter which is in turn secured to the cross slide of an automatic screw machine;

FIGURE 2 is a plan view of the device shown in FIGURE 1;

FIGURE 3 is a side elevational view of only the shave tool;

FIGURE 4 is a sectional view taken generally along the lines 4--4 of FIGURE 5;

FIGURE 5 is an end view of the shave tool taken along the line 5-5 of FIGURE 3;

FIGURE 6 is a cross sectional view taken generally along the line 6-6 of FIGURE 4; and

FIGURE 7 is an enlarged isometric view of a modified form of roll block assembly.

FIGURES 1 and 2 show the shave tool of the present invention generally identified by the reference numeral 10 in its preferred environment; namely, secured in position by means of an adapter 11 which in turn is secured to the cross slide 12 of an automatic screw machine. The cross slide 12 has been shown only partially in FIGURE 1.

The shave tool includes basically in combination a body 14 having first and second end portions 15 and 16 respectively, and wall means 19 define a cylindrical opening which extends generally laterally through the body 14 intermediate the first and second end portions 15 and 16, respectively. A cylindrical bushing 22 is positioned in the opening in the body and in such manner that the body 14 may be rotated thereabout in first and second directions; namely, in a clockwise or countercloskwise direction as viewed in FIGURE 1.

The adapter 11 includes generaily a plain block member 25 fixedly secured to the cross slide 12 by means of a T bolt 26 which extends verticaliy through the block member 25. An adapter arm 28 is provided which has a cylindrical portion which extends horizontally through the block member 25 and is secured thereto by means of bolts 29. The adapter arm has a flattened end portion 31 to which the cylindrical bushing 22 is fixedly secured by way of a bolt 33. First and second cylindrical openings 38 and 39 are provided in the second end portion of the body 14 and these openings extend into the laterally extending cylindrical opening 19 in the body 14. Wall means are provided on the cylindrical bushing and these wall means define first and second abutments 42 and 43, respectively. located on opposed sides of an annular groove 46 which extends around an intermediate portion of the cylindrical bushing 22. First and second helical springs 48 and 49 are positioned in the first and second cylindrical openings 38 and 39 respectively, and engage the first and second abutments 42 and 43. The first and second springs are maintained in position in the openings by means of first and second set screws 51 and 52 and in addition the set screws maintain the spring in engagement with the respective abutments and serve to yieidingly bias the body 14 in the first rotational direction (clockwise as seen in FIGURE 4) relative to the cylindrical bushing 22 which is held in a fixed position. The amount of spring force with which the body is biased may be readily adjusted by compressing the springs by screwing the set screws in further or resorting to the reverse procedure to lessen the spring force.

A third cylindrical opening 54 is provided through the second end portion of the body 14 and also extends into the laterally extending cylindrical opening 19 in the body. Wall means 55 define a third abutment on the cylindrical bushing. An oval point hollow set screw 57 is provided in this third cylindrical opening and is adapted to engage the third abutment 55 to limit the relative movement of the body 14 in the first or clockwise direction. The set screw 57 is maintained in position by a flat point hollow set screw 58. A fourth cylindrical opening 60 extends through the first end portion of the body 14 and also into the laterally extending cylindrical opening 19 in the body. A half-dog point hollow set screw 62 is provided in the fourth cylindrical opening and has an end portion which resides in the annular groove 46 on the bushing. The set screw 62 is held in position by means of a set screw 63 which is similar to set screw 58. By means of this construction the end portion of set screw 62 serves to permit relative rotative movement of the body relative to the bushing, but prevents axial shifting movement of the body relative to the bushing.

A vertical roll block guide 66 is secured to the first end portion of the body and might be generally said to overhang the first end portion of the body. This vertical roll block guide comprises a generally T-shaped member 67 but which has a vertically extending hole therein 68. A roll block assembly 69 which comprises a block member 71 with a T-shaped opening which is generally complementary to the T-shaped member 67 and interfits with the T-shaped member 67 to vertically guide the block member. Wall means 77 define a slot in the block member 71. An adjusting screw 80 threadably resides in the threaded hole 68 and has a head portion 81 which resides in the slot 77 in the block member 71 to fixedly and adjustably determine the vertical position of the roll block assembly. First and second spaced mounting walls 85 and 86 respectively, are provided on the block member and have pivot means 88 extending therebetween. A work engaging roller 90 is mounted by way of the pivot means 88 and rotates thereabout.

A cutter support 93 is secured to the second end portion of the body 14 and is located generally in line with the roll block guide 66. In the position shown in the drawings, the cutter support is located generally vertically below the roll block guide 66. A cutter 94 is mounted on the cutter support 93 and has a generally horizontally extending T-shaped slot 96 therein. A cutter holding bolt 97 has a head 98 which resides in the T-shaped slot in the cutter and extends through a vertical opening 99 in the cutter support. A nut member 100 is threadably secured to the end of the bolt which extends through the cutter support and serves to fixedly secure the cutter in position.

FIGURE 7 illustrates a modified form of the roll block assembly which is shown in FIGURES l-6. This roll block assembly is referred to as an offset roll block as sembly and is identified generally by the reference numenal 102. This offset roll block 102 is also provided with a mounting wall 103 as well as pivot means 105 which in turn mounts a work engaging roller 106. This ofi'set roll block assembly is, however, provided with the same T-shaped opening as the roll block assembly 69 as well as the slot 77 and is mounted on the roll block guide 66 in exactly the same manner. The assembly does differ, however, as will be noted since the work engaging roller is mounted exactly on the edge of the structure which supports it. This enables the shave tool with this type of roll block assembly to be used very close to the collet on a screw machine or other device which is holding the work.

FIGURE 1 illustrates the shave tool of the present invention with respect to a workpiece 108 which might be held by the work holding device of an automatic screw machine. The cross slide 12 of the screw machine as shown in FIGURE 1 would, for example, move from left to right as shown in the drawings. It is necessary that the device be set up in such a manner that the cutter 94 move just past the vertical center line of the workpiece or to the right of the vertical center line as shown in FIGURE 1. In setting up the device, the tension of the springs 48 and 49 is adjusted properly by means of the set screws 51 and 52 and set screw 57 determines the angular position of the body 14 when the roller 90 is not in engagement with the workpiece 108. In other words, in the back (or far left) position of the cross slide 12 the body 14 is cocked downward slightly so that in movement of the cross slide toward the workpiece, the roller 90 will engage the workpiece first. This compensates for misalignment of the machine spindle and the cross slide. The forward movement of the cross slide causes contact of the roller with the workpiece slightly ahead of the cutter and this vertically aligns the cutter with the workpiece. The use of the first and second helical springs provides a very stable and even pressure tending to rotate the body relative to the bushing. By means of the set screw in combination with the springs, the spring tension can be quite easily and quickly varied depending on the operation. The stop means which includes the abutment 55 in combination with the set screw 57 serves as a convenient means of determining the amount of rotational movement which will be permitted the body 14 relative to the bushing. It will also be noted that the left side of the body 14 is provided with a surface 114 which is generally straight line in configuration or vertical as seen in FIGURE 3 of the drawings. This generally shortens up the width of the shave tool and provides more clearance between the shave tool and the workpiece in the back position of the machine slide. The shave tool of the present invention may be used on either the front or back slide of an automatic screw machine and with the machine spindle running either forward or reverse. These factors, however, will determine whether the shave tool is used in the position shown in FIGURE 1 or whether the roller must be positioned on the bottom and the cutter 94 on top. The shave tool of the present invention holds very close tolerances which in turn helps eliminate secondary operations. With the use of the mounting which has been shown in the instant drawings, the cutter 94 may be quickly and easily removed for sharpening and then returned without disturbing the rest of the device. This provides a very low down time for the machine on which the device is mounted.

Although this invention has been described in its preferred form with a certain degree of particularity, it is understood that the present disclosure of the preferred form has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and the scope of the invention as hereinafter claimed.

What is claimed is:

l. A shaving tool including in combination a body having first and second end portions, wall means defining a cylindrical opening extending laterally through said body intermediate said first and second end portions, a cylindrical bushing positioned in said opening in said body whereby said body may be rotated thereabout in first and second directions, wall means on said cylindrical bushing intermediate the end portions thereof defining an annular groove therearound, threaded means extending axially through said bushing for fixedly securing said bushing to an adapter which in turn may be secured to the cross slide of an automatic screw machine, first and second cylindrical openings through said second end portion of said body into said laterally extending cylindrical opening in said body, wall means defining first and second abutments on said cylindrical bushing on opposed sides of said annular groove, first and second springs positioned in said first and second cylindrical openings respectively and engaging said first and second abutments respectively, first and second set screws for maintaining said first and second springs in said respective cylindrical openings and in engagement with said respective abutments to yieldingly bias said body in said first rotational direction relative to said bushing, a third cylindrical opening through said second end portion of said body into said laterally extending cylindrical opening in said body, wall means defining a third abutment on said cylindrical bushing, a set screw in said third cylindrical opening and having an end portion adapted to engage said third abutment to limit rotative movement of said body in said first direction, a fourth cylindrical opening extending through said first end portion of said body into said laterally extending cylindrical opening in said body, a set screw in said fourth cylindrical opening and having an end portion residing in said annular groove on said bushing to prevent axial shifting of the bushing and body relative to each other, a vertical roll block guide secured to said first end portion of said body, said vertical roll block guide comprising a T-shaped member having a vertically extending threaded hole therein, a roll block assembly comprising a block member having a T-shapcd opening complementary to and interfitting with said T-shaped member to vertically guide said block member, wall means defining a slot in said block member, an adjusting screw in said threaded hole in said T-shaped member and having a head portion in said slot in said block member to fixedly and adjustably determine the vertical position of said roll block assembly, first and second spaced mounting walls on said block member having pivot means extending therebetween, a work engaging roller mounted by said pivot means, a cutter support secured to said second end portion of said body and located in line with said roll block guide, a vertical opening in said cutter support, a cutter on said cutter support and having a horizontally extending Tshaped slot therein, a cutter holding bolt having a head residing in said T-shaped slot in said cutter and extending through said vertical opening in said cutter support, and a nut threadably secured to said cutter holding bolt to hold said cutter in position,

2. A shaving tool including in combination a body having first and second end portions, wall means defining a cylindrical opening extending laterally through said body intermediate said first and second end portions, a cylindrical bushing positioned in said opening in said body whereby said body may be rotated thereabout in first and second directions, wall means on said cylindrical bushing intermediate the end portions thereof defining an annular groove therearound, means extending axially through said bushing for fixedly securing said bushing to an adapter, first and second cylindrical openings through said second end portion of said body into said laterally extending cylindrical opening in said body, wall means defining first and second abutments on said cylindrical bushing on opposed sides of said annular groove, first and second springs positioned in said first and second cylindrical openings respectively and engaging said first and second abutments respectively, first and second screw members for maintaining said first :and second springs in said respective cylindrical openings and in engagement with said respective abutments to yieldingly bias said body in said first rotational direction relative to said bushing, a third cylindrical opening through said second end portion of said body into said laterally extending cylindrical opening in said body, wall means defining a third abutment on said cylindrical bushing, a screw member in said third cylindrical opening and having an end portion adapted to engage said third abutment to limit rotative movement of said body in said first direction, a fourth cylindrical opening extending through said first end portion of said body into said laterally extending cylindrical opening in said body, a screw member in said fourth cylindrical opening and having an end portion residing in said annular groove on said bushing to prevent axial shifting of said bushing and body relative to each other, a roll block guide secured to said first end portion of said body, said roll block guide comprising a guide member having a threaded hole therein, a roll block assembly comprising a guided member complementary to and interfitting with said guide member to guide said guided member, wall means defining a slot in said guided member, an adjusting screw in said threaded hole in said guide member and having a head portion in said slot in said slot member to fixedly and adjustably determine the position of said roll block assembly, mounting wall means on said guided member having pivot means supported thereby, a work engaging roller mounted by said pivot means, a cutter support secured to said second end portion of said body and located in line with said roll block guide, an opening in said cutter support, a cutter on said cutter support and having a slot therein, a cutter holding bolt having a head residing in said slot in said cutter and extending through said opening in said cutter support, and a nut threadably secured to said cutter holding bolt to hold said cutter in position.

3. A shaving tool including in combination a body having first and second end portions, wall means defining an opening extending latterally through said body intermediate said first and second end portions, a bushing positioned in said opening in said body whereby said body may be rotated thereabout in first and second directions, wall means on said bushing intermediate the end portions thereof defining a groove, means for fixedly securing said bushing to an adapter, first and second openings through said body into said laterally extending opening in said body, wall means defining first and second abutments on said bushing on opposed sides of said groove, first and second springs positioned in said first and second openings respectively and engaging said first and second abutments respectively, first and second holding means for maintaining said first and second springs in said respective openings and in engagement with said respective iabutrnents to yieldingly bias said body only in said first rotational direction relative to said bushing, a third opening through said body into said laterally extending opening in said body, wall means defining a third abutment on said bushing, a member in said third opening and having an end portion adapted to engage said third abutment to limit rotative movement of said body in said first direction, a fourth opening extending through said body into said laterally extending opening in said body, a member in said fourth opening and having an end portion residing in said groove on said bushing to prevent axial shifting of the bushing and body relative to each other, a roll block guide secured to said first end portion of said body, a roll block assembly mounted by said roll block guide for adjusted movement thereon, means for iadjustably positioning said roll block assembly on said roll block guide, a work engaging roller mounted by said roll block assembly, a cutter support secured to said second end portion of said body and located in line with said roll block assembly, a cutter on said cutter support, and means for removably securing said cutter on said cutter support.

4. A shaving tool including in combination a body having first and second end portions, wall means defining an opening extending laterally through said body intermediate said first and second end portions, a bushing positioned in said opening in said body whereby said body may be rotated thereabout in first and second directions, wall means on [said bushing intermediate the end portions thereof defining a groove, means for fixedly securing said bushing to an adapter, a first opening through said body into said laterally extending opening in said body, wall means defining a first abutment on said bushing, a first spring positioned in said first opening and en gaging said first abutment, a first holding means for maintaining said first spring in said opening and in engagement with said abutment to yieldingly bias said body only in said first rotational direction relative to said bushing, a second opening through said body into said laterally extending opening in said body, wall means defining a second abutment on said bushing, a member in said second opening and having an end portion adapted to engage said second abutment to limit rotative movement of said body in said first direction, a third opening extending through said body into said laterally extending opening in said body, a member in said third opening and having an end portion residing in said groove on said bushing to prevent axial shifting of the bushing and body relative to each other, a roll block guide secured to said first end portion of said body, a roll block assembly mounted by said roll block guide for adjusted movement thereon, means for adjustably positioning said roll block assembly on said roll block guide, a work engaging roller mounted by said roll block assembly, a cutter support secured to said second end portion of said body, a cutter on said cutter support, and means for removably securing said cutter on said cutter support.

5. A shaving tool including in combination a body having first and second end pontions, wall means defining a cylindrical opening extending laterally through said body intermediate said finst and second end portions, a cylindrical bushing positioned in said opening in said body whereby said body may be rotated thereabout in first and second directions, Wall means on said cylindrical bushing intermediate the end portions thereof defining an annular groove therearound, threaded means extending axially through said bushing for fixedly securing said bushing to an adapter which in turn may be secured to the cross slide of an automatic screw machine, first and second cylindrical openings through said second end portion of said body into said laterally extending cylindrical opening in said body, wall means defining first and second abutments on said cylindrical bushing on opposed sides of said annular groove, first and second springs positioned in said first and second cylindrical openings respectively and engaging said first and second abutments respectively, first and second set screws for maintaining said first and second springs in said respective cylindrical openings and in engagement with said respective abutments to yieldingly bias said body in said first rotational direction relative to said bushing, a third cylindrical opening through said second end portion of said body into said laterally extending cylindrical opening in said body, wall means defining a third abutment on said cylindrical bushing, a set screw in said third cylindrical opening and having an end portion adapted to engage said third abutment to limit rotative movement of said body in said first direction, a fourth cylindrical opening extending through said first end portion of said body into said laterally extending cylindrical opening in said body, a set screw in said fourth cylindrical opening and having an end portion residing in said annular groove on said bushing to prevent axial shifting of the bushing and body relative to each other, a vertical roll block guide secured to said first end portion of said body, said vertical roll block guide comprising a T-shaped member having a vertically extending threaded hole therein, a roll block assembly comprising a block member having a T- shaped opening complementary to and interfitting with said T-tshaped member to vertically guide said block member, said block member having a sidewall, wall means defining a slot in said block member, an adjusting screw in said threaded hole in said T-shaped member and having a head portion in said slot in said block member to fixedly and adjustably determine the vertical position of said roll block assembly, a mounting wall on said block member spaced from said sidewall, a pivot member supported by said mounting wall and terminating at a position generally in line with said sidewall, a work engaging roller mounted by said pivot member and having a side terminating at a position generally in line with said sidewall and the end of said pivot member, a cutter support secured to said second end portion of said body and located in line with said roll block guide, a vertical opening in said cutter support, a cutter on said cutter support and having a horizontally extending T-shaped slot therein, a cutter holding bolt having a head residing in said T-shapcd slot in said cutter and extending through said vertical opening in said cutter support, and a nut threadably secured to said cutter holding bolt to hold said cutter in position.

References Cited in the file of this patent UNITED STATES PATENTS 

4. A SHAVING TOOL INCLUDING IN COMBINATION A BODY HAVING FIRST AND SECOND END PORTIONS, WALL MEANS DEFINING AN OPENING EXTENDING LATERALLY THROUGH SAID BODY INTERMEDIATE SAID FIRST AND SECOND END PORTIONS, A BUSHING POSITIONED IN SAID OPEINING IN SAID BODY WHEREBY SAID BODY MAY BE ROTATED THEREABOUT IN FIRST AND SECOND DIRECTIONS, WALL MEANS ON SAID BUSHING INTERMEDIATE THE END PORTIONS THEREOF DEFINING A GROOVE, MEANS FOR FIXEDLY SECURING SAID BUSHING TO AN ADAPTER, A FIRST OPENING THROUGH SAID BODY INTO SAID LATERALLY EXTENDING OPENING IN SAID BODY, WALL MEANS DEFINING A FIRST ABUTMENT ON SAID BUSHING, A FIRST SPRING POSITIONED IN SAID FIRST OPENING AND ENGAGING SAID FIRST ABUTMENT, A FIRST HOLDING MEANS FOR MAINTAINING SAID FIRST SPRING IN SAID OPENING AND IN ENGAGEMENT WITH SAID ABUTMENT TO YEILDING BIAS SAID BODY ONLY IN SAID FIRST ROTATIONAL DIRECTION RELATIVE TO SAID BUSHING, A SECOND OPENING THROUGH SAID BODY INTO SAID LATERALLY EXTENDING OPENING IN SAID BODY, WALL MEANS DEFINING A SECOND ABUTMENT ON SAID BUSHING, A MEMBER IN SAID SECOND OPENING AND HAVING AN END PORTION ADAPTED TO ENGAGE SAID SECOND ABUTMENT TO LIMIT ROTATIVE MOVEMENT OF SAID BODY IN SAID FIRST DIRECTION, A THIRD OPENING EXTENDING THROUGH SAID BODY, INTO SAID LATERALLY EXTENDING OPENING IN SAID BODY, A MEMBNER IN SAID THIRD OPENING AND HAVING AN END PORTION RESIDING IN SAID GROOVE ON SAID BUSHING TO PREVENT AXIAL SHIFTING OF THE BUSHING AND BODY RELATIVE TO EACH OTHER, A ROLL BLOCK GUIDE SECURED TO SAID FIRST END PORTION OF SAID BODY, A ROLL BLOCK ASSEMBLY MOUNTED BY SAID ROLL BLOCK GUIDE FOR ADJUSTED MOVEMENT THEREON, MEANS FOR ADJUSTABLY POSITIONING SAID ROLL BLOCK ASSEMBLY ON SAID ROLL BLOCK GUIDE, A WORK ENGAGING ROLLER MOUNTED BY SAID BLOCK ASSEMBLY, A CUTTER SUPPORT SECURED TO SAID SECOND END PORTION OF SAID BODY, A CUTTER ON SAID CUTTER SUPPORT, AND MEANS FOR REMOVABLY SECURING SAID CUTTER ON SAID CUTTER SUPPORT. 